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<head><meta charset="utf-8"><title>perf help · t-compiler/help · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/index.html">t-compiler/help</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html">perf help</a></h3>

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<a name="244026411"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244026411" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244026411">(Jun 26 2021 at 17:54)</a>:</h4>
<p>Anybody around that can run linux perf on a branch (and the git base) for me? Trying to figure out the perf regressions for <a href="https://github.com/jackh726/rust/tree/assoc-type-norm-rebase">https://github.com/jackh726/rust/tree/assoc-type-norm-rebase</a></p>



<a name="244026599"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244026599" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244026599">(Jun 26 2021 at 17:59)</a>:</h4>
<p>Kind of stuck here and I don't run linux</p>



<a name="244030216"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030216" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030216">(Jun 26 2021 at 19:22)</a>:</h4>
<p><span class="user-mention" data-user-id="232957">@Jack Huey</span> you said perf regressions - you mean like from <code>@rust-timer queue</code>? do you have a link to the comparison on perf.rlo?</p>



<a name="244030489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030489">(Jun 26 2021 at 19:30)</a>:</h4>
<p>yes</p>



<a name="244030497"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030497" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030497">(Jun 26 2021 at 19:30)</a>:</h4>
<p><a href="https://perf.rust-lang.org/compare.html?start=d192c80d2284ba6b5146bb3da586354c3762c72b&amp;end=b9afb09891431134fc50f92cdd4441391526c38d">https://perf.rust-lang.org/compare.html?start=d192c80d2284ba6b5146bb3da586354c3762c72b&amp;end=b9afb09891431134fc50f92cdd4441391526c38d</a></p>



<a name="244030567"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030567" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030567">(Jun 26 2021 at 19:32)</a>:</h4>
<p><span class="user-mention" data-user-id="232545">@Joshua Nelson</span> I know it's a typeck regression, but not sure if I can dig into that more</p>



<a name="244030644"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030644" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030644">(Jun 26 2021 at 19:34)</a>:</h4>
<p>hmm, so the way I would normally do this for rustdoc is run it locally with <code>-Z self-profile</code> and then see what's slow, then add more <code>sess.time()</code> calls until I get a good idea of exactly what is going wrong. I haven't tried to find <em>regressions</em> in performance before - maybe <span class="user-mention" data-user-id="306073">@Tyson Nottingham</span> or <span class="user-mention" data-user-id="330154">@The 8472</span> have suggestions?</p>



<a name="244030665"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030665" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030665">(Jun 26 2021 at 19:35)</a>:</h4>
<p>Yeah, I mean running <code>-Z self-profile</code> just points to typeck</p>



<a name="244030677"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030677" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030677">(Jun 26 2021 at 19:35)</a>:</h4>
<p>I could add <code>sess.time()</code> calls, but then I have to add them to both the branch and base</p>



<a name="244030678"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030678" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030678">(Jun 26 2021 at 19:35)</a>:</h4>
<p>yeah that's painful</p>



<a name="244030692"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030692" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030692">(Jun 26 2021 at 19:36)</a>:</h4>
<p>I've tried to compare <code>RUSTC_LOG</code> outputs</p>



<a name="244030729"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030729" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030729">(Jun 26 2021 at 19:36)</a>:</h4>
<p>And that's turned up nothing</p>



<a name="244030733"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030733" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030733">(Jun 26 2021 at 19:36)</a>:</h4>
<p>The perf rlo testsuite can be run locally with different output modes, including <code>perf record</code>. But I don't think we have that automated, so it has to be done locally.</p>



<a name="244030742"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030742" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030742">(Jun 26 2021 at 19:36)</a>:</h4>
<p>Right, I just can't run <code>perf</code></p>



<a name="244030753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030753">(Jun 26 2021 at 19:37)</a>:</h4>
<p><a href="https://github.com/rust-lang/rustc-perf/tree/master/collector#user-content-profiling-local-builds">https://github.com/rust-lang/rustc-perf/tree/master/collector#user-content-profiling-local-builds</a></p>



<a name="244030779"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030779" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030779">(Jun 26 2021 at 19:38)</a>:</h4>
<p>(well, more so, I can run perf, but I don't get hardware counters because I'm using WSL2)</p>



<a name="244030819"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030819" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030819">(Jun 26 2021 at 19:38)</a>:</h4>
<p>Yeah, I could do that for you. But afaik recordings are less useful when inspected on a different machines because perf report wants to look at the binaries from which the recording was generated. Plus they can be many gigabytes in size when recording call-graphs.</p>



<a name="244030830"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030830" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030830">(Jun 26 2021 at 19:38)</a>:</h4>
<p>Ah, not even cycles?</p>



<a name="244030869"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030869" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030869">(Jun 26 2021 at 19:39)</a>:</h4>
<p><span class="user-mention silent" data-user-id="330154">The 8472</span> <a href="#narrow/stream/182449-t-compiler.2Fhelp/topic/perf.20help/near/244030819">said</a>:</p>
<blockquote>
<p>Yeah, I could do that for you. But afaik recordings are less useful when inspected on a different machines because perf report wants to look at the binaries from which the recording was generated. Plus they can be many gigabytes in size when recording call-graphs.</p>
</blockquote>
<p>ugh</p>



<a name="244030874"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030874" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030874">(Jun 26 2021 at 19:39)</a>:</h4>
<p><span class="user-mention silent" data-user-id="330154">The 8472</span> <a href="#narrow/stream/182449-t-compiler.2Fhelp/topic/perf.20help/near/244030830">said</a>:</p>
<blockquote>
<p>Ah, not even cycles?</p>
</blockquote>
<p>yeah, I'm getting like no useful info</p>



<a name="244030943"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030943" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030943">(Jun 26 2021 at 19:41)</a>:</h4>
<div class="codehilite"><pre><span></span><code> 5.10%     5.10%  rustc    librustc_driver-cf15266cc6572f54.so  [.] 0x0000000002181dfd
 2.55%     2.55%  rustc    librustc_driver-cf15266cc6572f54.so  [.] 0x0000000002181f39
 1.91%     1.91%  rustc    librustc_driver-cf15266cc6572f54.so  [.] 0x000000000215b331
 1.91%     1.91%  rustc    librustc_driver-cf15266cc6572f54.so  [.] 0x000000000215b349
  ...
</code></pre></div>



<a name="244030961"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244030961" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244030961">(Jun 26 2021 at 19:41)</a>:</h4>
<p>You need to compile rustc with debuginfo (config.toml)</p>



<a name="244031062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031062">(Jun 26 2021 at 19:44)</a>:</h4>
<p>ugh well shoot. I thought the <code>compiler</code> profile would enable that</p>



<a name="244031113"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031113" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031113">(Jun 26 2021 at 19:44)</a>:</h4>
<p>it was the one thing I couldn't push through <a href="https://github.com/rust-lang/compiler-team/issues/326#issuecomment-653537566">https://github.com/rust-lang/compiler-team/issues/326#issuecomment-653537566</a></p>



<a name="244031120"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031120" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031120">(Jun 26 2021 at 19:44)</a>:</h4>
<p>If you really can't get it to work we can do a screensharing session, but I have never setup video stuff on this machine, normally do that on windows. linux audio/video subsystem... <span aria-label="sweat smile" class="emoji emoji-1f605" role="img" title="sweat smile">:sweat_smile:</span></p>



<a name="244031203"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031203" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031203">(Jun 26 2021 at 19:46)</a>:</h4>
<p><span class="user-mention" data-user-id="330154">@The 8472</span> that would be great; let me see if I can get this working though</p>



<a name="244031210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031210">(Jun 26 2021 at 19:46)</a>:</h4>
<p><code>debug</code> turns on debug asserts and debuginfo.  <code>debuginfo-level</code> alone would do for profiling.</p>



<a name="244031294"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031294" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031294">(Jun 26 2021 at 19:48)</a>:</h4>
<p>I think the other bit of the problem is I recently switched environments, so I made a new config.toml. I had <code>debug=true</code> in the other one, but not here lol</p>



<a name="244031303"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244031303" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244031303">(Jun 26 2021 at 19:49)</a>:</h4>
<p>(again, I figured that got enabled by profile=compiler)</p>



<a name="244032742"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032742" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032742">(Jun 26 2021 at 20:24)</a>:</h4>
<p>Okay so setting <code>debug = true</code> didn't help</p>



<a name="244032827"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032827" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032827">(Jun 26 2021 at 20:27)</a>:</h4>
<p>How are you running perf? With which arguments?</p>



<a name="244032833"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032833" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032833">(Jun 26 2021 at 20:27)</a>:</h4>
<p><code>perf record -F99 --call-graph dwarf</code></p>



<a name="244032909"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032909" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032909">(Jun 26 2021 at 20:29)</a>:</h4>
<p>And you're profiling a using a stage 1 <code>rustc</code>?</p>



<a name="244032959"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032959" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032959">(Jun 26 2021 at 20:30)</a>:</h4>
<p>Yeah, this is really the full command <code>perf record -F99 --call-graph dwarf ./build/x86_64-unknown-linux-gnu/stage1/bin/rustc -Zno-codegen --crate-type=lib inflate.rs</code></p>



<a name="244032990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032990">(Jun 26 2021 at 20:31)</a>:</h4>
<p>yeah, ok, that should show symbols in perf report. Well, debug = true says it turns on <code>debuginfo-level = 1</code>. Which I think should be enough, but I always use 2 for some reason... it was to get source annotations on top, maybe.</p>



<a name="244032996"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244032996" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244032996">(Jun 26 2021 at 20:31)</a>:</h4>
<p>2 gets you local variables I think</p>



<a name="244033000"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033000" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033000">(Jun 26 2021 at 20:31)</a>:</h4>
<p>it shouldn't matter for function symbols</p>



<a name="244033042"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033042" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033042">(Jun 26 2021 at 20:32)</a>:</h4>
<p>I also tried <code>debuginfo-level = 2</code> (first) and that didn't work either</p>



<a name="244033175"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033175" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033175">(Jun 26 2021 at 20:36)</a>:</h4>
<p>ok <span aria-label="shrug" class="emoji emoji-1f937" role="img" title="shrug">:shrug:</span> ... any screen sharing solution that works with linux?</p>



<a name="244033181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033181">(Jun 26 2021 at 20:36)</a>:</h4>
<p>I use discord and it works fine</p>



<a name="244033182"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033182" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033182">(Jun 26 2021 at 20:36)</a>:</h4>
<p>or <a href="http://meet.jit.si">meet.jit.si</a></p>



<a name="244033246"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033246" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033246">(Jun 26 2021 at 20:38)</a>:</h4>
<p>I can also set up a zoom room</p>



<a name="244033334"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033334" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033334">(Jun 26 2021 at 20:41)</a>:</h4>
<p>I've thought about also just like getting like an AWS vm for a couple hours lol</p>



<a name="244033546"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/perf%20help/near/244033546" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> The 8472 <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/perf.20help.html#244033546">(Jun 26 2021 at 20:46)</a>:</h4>
<p>sent you a private message for the meeting link</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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